Improvement in horseshoes and calks



UNITED STATES PATENT` OEEICE; 1

CHARLES H. JOHNSON, OE BOSTON, MASSACHUSETTS, ASSIGNOE To HIM- t SELF AND OHAS. E. WOODMAN, OF SAME PLACE.

IMPROVEMENT IN HORSESHOES `AND CALKS.

Specilication forming part of Letters Patent No. 47.495. dated April .5, 1865.

.To aZZ whom it may concern:

Be it known that I, CHARLES H. JOHNSON, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Horseshoes and their Calks; and I do hereby declare the same to be fully described in the following specilication and represented in the accompanying drawings, of which Figure 1 is a bottom view of a horseshoe provided with calks applied to it in accordance with my invention. Fig. 2 is a section taken crosswise through one of the heel-calks. Fig. 3 is a bottom view of the shoe as it appears without its calks. Fig. 4 is a rear sideview of one of the heel-calks. Fig. 5 is a transverse section of the toe-call; and thepart of the shoe to which it is applied Fig. 6 is a section taken crosswise of the Shoe and through the toe-calk. Fig.` 7 is a section taken crosswise through the shoe and one of the heelcalks.

In carrying out my invention I provide the shoe A at the toe as well as at each of the heels with a flange, a, to extend below the lower surface of the shoe, and next adjacent to the inner side of such flangeI make in the Shoe a mortise, b. Each of thecalks B C D, I construct with a lateral recess, c, to receive the flange. Besides the said recess, I provide the calks with one or more tenons, d d, to enter and fill the mortise or mortises b. Through the flange and the calk I pass one or more headed screwbolts, a', on which I screw one or more nuts, f. In Fig. 2 the flange is exhibited as extend complish this. i

It is well known that frequent removals of shoes from a horses feet for the purpose of,` sharpening the calks is often attended with or t is liable to produce injury to the hoof, allof' which may be avoided by theluse of my in vention.

removable calks; therefore I do not claim such. What I claim as my invention isor more bolts, a', or equivalents, extending as specified.

C. H. JOHNSON.

Witnesses:

R. H. EDDY, F. l?. HALE, Jr.A

'ing into a socket made in the calk, and so as` to be entirely covered on all sides by the calk.`

spect to the tenon and mortise, they contrib` ute, like the' prong and socket of a tooth, to y bolts from strain." With my invention, whent wear, they may be easily removed from thethem, it not being necessary to remove the y` shoe from the foot ofthe horse in` order to ac- I am aware that shoes have been made with Thecombination of the fastening-flange `a` and the mortise b with the corresponding socket, c, and tenon d of the ealk, and withone through the ilange and thecalk, Substantially 

